body{
	background-color: lightgrey ;
	width: 100%;
}

#box{
	width: 400px;
	padding: 10px 30px;
	border-radius: 1px solid black;
	background-color: #fff;
	margin: 100px auto;
	text-align: center;
	vertical-align: middle;
}
.loginTip{
	display: inline-block;
	color:red;
	font-size: 14px;
	height: 28px;
	line-height: 20px;
	width: 300px;
}